SCREW
P/N: NK509-10R7F
NSN: 5305 00 637 8413
MFG NYLOCK CORP
 
NEW GOV SURPLUS
 
 
ITEM NAME:   SCREW,CAP,SOCKET HE
DEFINITION:  An externally threaded fastener whose threaded portion is of one
             nominal diameter. The head has an internal socket or multiple spline
             for use with an inserted driver. A locking feature may be incorporated
             in the design of the head or threads. Excludes items with bevel
             (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW,
             SHOULDER; and SCREW, MACHINE.
            
 
CHARACTERISTIC                          VALUE
THREAD CLASS                            3A                                               
THREAD DIRECTION                        RIGHT-HAND                                       
THREAD LENGTH                           0.359 INCHES MINIMUM                             
FASTENER LENGTH                         0.459 INCHES MINIMUM AND 0.479 INCHES MAXIMUM    
HEAD STYLE                              FLAT COUNTERSUNK                                 
HEAD DIAMETER                           0.371 INCHES MINIMUM AND 0.385 INCHES MAXIMUM    
LOCKING FEATURE                         PELLET THREADS                                    
INTERNAL DRIVE STYLE                    CROSS RECESS TYPE 1                              
NOMINAL THREAD DIAMETER                 0.190 INCHES                                     
THREAD QUANTITY PER INCH                32                                                
MINIMUM TENSILE STRENGTH                125000 POUNDS PER SQUARE INCH                    
HARDNESS RATING                         26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C      
                                        MAXIMUM OVERALL                                  
COUNTERSINK ANGLE                       100.0 DEGREES NOMINAL                            
MATERIAL                                STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 
                                        8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
SURFACE TREATMENT                       CADMIUM OVERALL                                  
THREAD SERIES DESIGNATOR                UNF